2016-2023 Hyundai Ix35 SUV Introduction -> Fuel Requirements User Manual
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Introduction -> Fuel Requirements for Your Hyundai Ix35 SUV Second Generation (2016-2023)

Introduction  
FUEL REQUIREMENTS  
Gasoline engine  
Unleaded  
Leaded (if equipped)  
CAUTION  
For some countries, your vehicle is  
designed to use leaded gasoline.  
When you are going to use leaded  
gasoline, we recommend that you  
ask an authorized HYUNDAI dealer  
whether leaded gasoline in your  
vehicle is available or not.  
For Europe  
NEVER USE LEADED FUEL.The  
use of leaded fuel is detrimental  
to the catalytic converter and  
will damage the engine control  
system’s oxygen sensor and  
affect emission control.  
For the optimal vehicle performance,  
we recommend you use unleaded  
gasoline which has an octane rating  
of RON (Research Octane Number)  
95 / AKI (Anti Knock Index) 91 or  
higher. (Do not use methanol blend-  
ed fuels.)  
Octane Rating of leaded gasoline is  
same with unleaded one.  
Never add any fuel system  
cleaning agents to the fuel tank  
other than what has been speci-  
fied (We recommend that you  
consult an authorized HYUNDAI  
dealer for details.)  
You may use unleaded gasoline with  
an octane rating of RON 91-94 / AKI  
87-90 but it may result in slight per-  
formance reduction of the vehicle.  
Gasoline containing alcohol and  
methanol  
Gasohol, a mixture of gasoline and  
ethanol (also known as grain alco-  
hol), and gasoline or gasohol con-  
taining methanol (also known as  
wood alcohol) are being marketed  
along with or instead of leaded or  
unleaded gasoline.  
Except Europe  
WARNING  
Your new vehicle is designed to use  
only unleaded fuel having an Octane  
Rating of RON (Research Octane  
Number) 91 / AKI (Anti-Knock Index)  
87 or higher. (Do not use methanol  
blended fuels.)  
Do not "top off" after the noz-  
zle automatically shuts off  
when refueling.  
Do not use gasohol containing more  
than 10% ethanol, and do not use  
gasoline or gasohol containing any  
methanol. Either of these fuels may  
cause drivability problems and dam-  
age to the fuel system, engine control  
system and emission control system.  
Always check that the fuel cap  
is installed securely to pre-  
vent fuel spillage in the event  
of an accident.  
Your new vehicle is designed to  
obtain maximum performance with  
UNLEADED FUEL, as well as mini-  
mize exhaust emissions and spark  
plug fouling.  
F6  
Introduction  
Discontinue using gasohol of any  
kind if drivability problems occur.  
Other fuels  
Use of MTBE  
Using fuels such as  
- Silicone (Si) contained fuel,  
HYUNDAI recommends avoiding  
fuels containing MTBE (Methyl  
Tertiary Butyl Ether) over 15.0% vol.  
(Oxygen Content 2.7% weight) in  
your vehicle.  
Vehicle damage or driveability prob-  
lems may not be covered by the  
manufacturer’s warranty if they result  
from the use of:  
- MMT (Manganese, Mn) contained  
fuel,  
- Ferrocene (Fe) contained fuel, and  
1. Gasohol containing more than  
10% ethanol.  
Fuel containing MTBE over 15.0%  
vol. (Oxygen Content 2.7% weight)  
may reduce vehicle performance and  
produce vapor lock or hard starting.  
- Other metalic additives contained  
fuels,  
2. Gasoline or gasohol containing  
methanol.  
may cause vehicle and engine dam-  
age or cause plugging, misfiring,  
poor acceleration, engine stalling,  
catalyst melting, abnormal corrosion,  
life cycle reduction, etc.  
3. Leaded fuel or leaded gasohol.  
CAUTION  
CAUTION  
Your New Vehicle Limited  
Warranty may not cover dam-  
age to the fuel system and any  
performance problems that are  
caused by the use of fuels con-  
taining methanol or fuels con-  
taining MTBE (Methyl Tertiary  
Butyl Ether) over 15.0% vol.  
(Oxygen Content 2.7% weight.)  
Also, the Malfunction Indicator Lamp  
(MIL) may illuminate.  
Never use gasohol which con-  
tains methanol. Discontinue  
use of any gasohol product  
which impairs drivability.  
NOTICE  
Damage to the fuel system or per-  
formance problem caused by the use  
of these fuels may not be covered by  
your New Vehicle Limited Warranty.  
F7  
Introduction  
Do not use methanol  
Operation in foreign countries  
Diesel engine  
Diesel fuel  
Fuels containing methanol (wood If you are going to drive your vehicle  
alcohol) should not be used in your in another country, be sure to:  
vehicle. This type of fuel can reduce  
Diesel engine must be operated only  
on commercially available diesel fuel  
that complies with EN 590 or compa-  
rable standard. (EN stands for  
"European Norm"). Do not use  
marine diesel fuel, heating oils, or  
non-approved fuel additives, as this  
will increase wear and cause dam-  
age to the engine and fuel system.  
The use of non-approved fuels and /  
or fuel additives will result in a limita-  
tion of your warranty rights.  
• Observe all regulations regarding  
vehicle performance and damage  
registration and insurance.  
components of the fuel system,  
• Determine that acceptable fuel is  
engine control system and emission  
available.  
control system.  
Fuel Additives  
HYUNDAI recommends that you use  
unleaded gasoline which has an  
octane rating of RON (Research  
Octane Number) 95 / AKI (Anti Knock  
Index) 91 or higher (for Europe) or  
Octane Rating of RON (Research  
Octane Number) 91 / AKI (Anti-Knock  
Index) 87 or higher (except Europe).  
Diesel fuel of above cetane 51 is  
used in your vehicle. If two types of  
diesel fuel are available, use summer  
or winter fuel properly according to  
the following temperature conditions.  
For customers who do not use good  
quality gasolines including fuel addi-  
tives regularly, and have problems  
starting or the engine does not run  
smoothly, one bottle of additives  
added to the fuel tank at every  
15,000km (for Europe)/ 5,000km  
(except Europe). Additives are avail-  
able from your authorized HYUNDAI  
dealer along with information on how  
to use them. Do not mix other addi-  
tives.  
• Above -5°C (23°F) ... Summer type  
diesel fuel.  
• Below -5°C (23°F) ... Winter type  
diesel fuel.  
Watch the fuel level in the tank very  
carefully : If the engine stops through  
fuel failure, the circuits must be com-  
pletely purged to permit restarting.  
F8  
Introduction  
Biodiesel  
CAUTION  
CAUTION  
Commercially supplied Diesel blends  
of no more than 7% biodiesel, com-  
monly known as "B7 Diesel" may be  
used in your vehicle if Biodiesel  
meets EN 14214 or equivalent spec-  
ifications. (EN stands for "European  
Norm"). The use of biofuels exceed-  
ing 7% made from rapeseed methyl  
ester (RME), fatty acid methyl ester  
(FAME), vegetable oil methyl ester  
(VME) etc. or mixing diesel exceed-  
ing 7% with biodiesel will cause  
increased wear or damage to the  
engine and fuel system. Repair or  
replacement of worn or damaged  
components due to the use of non  
approved fuels will not be covered by  
the manufactures warranty.  
Do not let any gasoline or water  
enter the tank. This would make  
it necessary to drain it out and  
to bleed the lines to avoid jam-  
ming the injection pump and  
damaging the engine.  
Never use any fuel, whether  
diesel, B7 biodiesel or other-  
wise, that fails to meet the lat-  
est petroleum industry speci-  
fication.  
Never use any fuel additives  
or treatments that are not rec-  
ommended or approved by  
the vehicle manufacturer.  
CAUTION  
Diesel Fuel  
It is recommended to use the  
regulated automotive diesel  
fuel for diesel vehicle equipped  
with the DPF system.  
If you use diesel fuel including  
high sulfur (more than 50 ppm  
sulfur) and unspecified addi-  
tives, it can cause the DPF sys-  
tem to be damaged and white  
smoke can be emitted.  
F9  

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